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Meeting Materials Science & Technology 2017
Symposium Gas/Metal Reactions, Diffusion and Phase Transformation during Heat Treatment of Steel
Organizer(s) Liang He, Air Products and Chemicals Inc.
Xuekun Li, Tsinghua University
Daniel S. Baker, General Motors
Scope Steel is the most widely used alloy and for a very good reason. The reason is usually considered to be the abundance of iron ore (iron is the principal ingredient in all steels) and/or the ease by which it can be refined from ore. Neither of these is necessarily correct; iron is by no means the most abundant element, and it is not the easiest metal to produce from ore. Steel is such an important material because of its tremendous flexibility in metal working and heat treating to produce a wide variety of mechanical, physical, and chemical properties. Heat treating of steel is the process of heating and cooling of carbon steel to change the steel's physical and mechanical properties without changing the original shape and size. Heat Treating is often associated with increasing the strength of the steel, but it can also be used to alter certain manufacturability objectives such as improve machinability, formability, restore ductility etc. Thus heat treating is a very useful process to help other manufacturing processes and also improve product performance by increasing strength or provides other desirable characteristics. High carbon steels are particularly suitable for heat treatment, since carbon steel respond well to heat treatment and the commercial use of steels exceeds that of any other material.
Heat treating techniques include annealing, case hardening, precipitation strengthening, tempering and quenching. During different heat treating processes, various atmosphere/steel reactions occur at the part surface, and diffusion/phase transformation happens inside the steel part. It will help the heat treaters and heat treating equipment producer to understand the reactions, diffusion and phase transformation process. Many researchers have studied a lot with experimental methods and numerical simulation tools.
This symposium will encourage the experts from heat treating companies and researcher from institutions or universities to communicate and share their new findings. Topics anticipated include, but are not limited to:
• Development of novel heat treatment technologies
• Materials science for heat treatment process design
• Numerical simulation of gas/metal reactions, diffusion and phase transformation during heat treating
• Improvements of heat treatment response through re-designing steel composition
• Microstructural study of steel during heat treatment processes
• Study on the relationship between microstructure and mechanical properties of heat treated steel
Abstracts Due 03/31/2017
Proceedings Plan Definite: At-meeting proceedings

Carbon-Fraction–Depth Profiles in Low-temperature Carburized Steel
Characterization of Microalloyed Wrought Armor Steels Manufactured in Small Scale
Enhancement to the Modeling of the Carbon Concentration and Microhardness Profiles in Carburized Steel
G-37: Influence of Different Cooling Microstructure on Surface Cracks of HSLA Steel Plate by DHCR
G-38: Study on the Precipitation Behavior of Maraging Stainless Steel
Identification of the Important Material and Process Parameters that Control Distortion and Residual Stress in Heat Treatment
Instrumented Indentation Characterization of Bainite/Martensite Duplex Microstructure on Mechanical Properties
Microstructural Modifications in AF9628 Steel
Microstructure and Mechanical Properties of AISI4140 and Pyrowear53 after Gas and Liquid Quenching
Precipitation of Ti-C-N Particles in Austenite during Cooling Process of High-Ti Microalloyed Steel
Reaction between MnO-SiO2-FeO Inclusion and Steel Matrix Deoxidized by Si and Mn at Different Heat Treatment Temperatures
Surface Engineering of IN-718 by Low-temperature Carburization
Variant Selection in Primary and Secondary Nucleation of Bainite in Steels with Various Carbon Contents

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